Improvement in machines for dividing plate metal along curved or straight lines



2 Sheets--Sheei1. N. WATERMAN & A. T. PER KIN 8. Improvement in Machinesfor Dividing Plate-Meta! Along Curved or Straight Lines.

Patented April 30,1872.

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:WITNESSES.

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2 Sheets--Sheet 2.

N. WATERMAN & A. T. PERKINS.

Improvement in Machines for Dividing PIate-Metai Along Curved orStraight Lines. No. 126,357, F Patented April 30, 1872.

INVENTORS. WlTNESSES.

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UNITED v STATES PATENT OFFICE.

NEHEMIAH WATERMAN AND ALFRED T. PERKINS, OF TOLEDO, OHIO.

IMPROVEMENT IN MACHINES FOR DIVIDING PLATE METAL ALONG CURVED 0RSTRAIGHT LINES.

Specification forming part of Letters Patent No. 126,357, dated April30, 1872.

Specification describing an Improved Machine for Cutting Sheet and PlateMetal, invented by NEHEMIAH WATERMAN and AL- FRED T. PERKINS, both ofToledo, in the county of Lucas, State of Ohio.

The machine is designed to operate like a gi g-saw for readily andrapidly cutting sheet and plate metal in any required shapes. The cuttingde'vice consists of a reciprocating punching-cutter, to be driven athigh speed, in connection with a suitable die, table, and operatingmechanism. The sheet or plate is guided by aid of a pivot-guide in linewith the cutter, or nearly so. The cutter is raised or lowered out ofaction by means of .a rotary eccentric box for its driving-shaft.

Figure 1 is a plan of a working machine illustrating the invention. Fig.2 is a vertical longitudinal section of the same on the line 2 2,Fig. 1. Fig. 3 is a front elevation thereof. Figs. 4 and 5 are sectionalside elevations illustratin g modifications in the arrangement of theoperating mechanism and guide.

A in Figs. 1, 2, and 3 represents a metallic table, composed of circularhorizontal top 2, standards y as, and stay-bolts w, and screws 1:bracing and clamping the whole. Instead of this a table or frame of anysuitable construction, as indicated by Figs. 4 and 5, may be employed. Brepresents a horizontal rotary shaft furnished with driving-pulley O andan eccentric D. E represents the link of the eccentric D; F, a slidinghead; and G, a cutter of peculiar form secured in said head by setscrewto. H represents a die coincident with the cutter G, and constructedwith an aper- V ture, t, to receive the same. The cutter G is of thepunch type, is slightly oblong in crosssection, with fiat face, roundedback, and parallel sides; and its end surface recedes back slightly fromits cutting-edge. It is designed to receive a rapid reciprocating motionthrough the described means or their equivalent, and to operate, inconjunction with its die, to remove small portions of the sheet or platesuccessively until the required length of cut is accomplished. Itsoperating mechanism may be located below the die, as illustrated inFigs. 1, 2, and 3, or above the same, as indicated by Figs. 4 and 5. Irepresents a pivot-guide, adapted to facilitate the guiding of a platewhich it is designed to out along a curved or irregular line byoccupying constantly the kerf made; and to this end the largest diameterof the guide should not be greater than the breadth of the cutter acrossits cutting face, and also should be placed close to and behind thecutter. This may be constituted of the stem of the cutter, asrepresented in Figs. 1, 2, and 3; or may be an extension thereof, asrepresented in Fig. 4; or a projection from the die or table, asindicated in Fig. 5. In the latter case it would be arranged closebehind the cutter, as indicated. but might be attached to the die ortable instead of formed therewith, as indicated, and might be more orless high. The relations above specified of the pivot-guide with thecutter will be seen to be essential to permit the cutting of scrolls andcircles, which the machine is designed to effect. J represents a journalbox, constructed with cylindrical ends 8, and an eccentric bearing, 1',for the driving-shaft B, being mounted by said cylindrical ends inbearings q in the table or frame, and furnished with a hand-lever, p, bywhich to rotate it. By shifting said box, the cutter (through the shaftB, eccentric D, link E, and head F) is raised or lowered out of action,as for introducing the sheet or plate, and returned to work again, asrequired. The cutter is represented as in action in Figs. 1, 2, 4, and5, and out of action in Fig. 3. 0 represents the vertical way or guideof the head E, and n the cap of the same.

Claims.

What we claim as new herein is-- 1. In combination with apunching-cutter, a pivot-guide adapted to occupy the kerf pro duced bythe cutter, and thus to form a guide for the sheet or plate,substantially as herein described 2. In combination with the said cutterG and its die H and table or frame A, the pulley O, shaft 13, eccentricD, link E, and sliding head F, and the rotary eccentric journalbox J, asmeans for operating the said cutter and throwing the same out of action.

NEHEMIAH VVATERMAN. ALFRED T. PERKINS.

Witnesses:

RALPH OSBORNE, O. F. ADAMS.

